Daily operation
Typically a Site Manager, an Assistant Site Manager, a Land Technician, and a crew of technicians work on site, with responsibility for facility operations and maintenance.

Site Managers oversee the procurement of spare parts and other materials, interface with landowners and the local utility, and address any local and environmental issues.  On a regular basis, they verify that the wind farm is in good working condition and performing according to expectations.  Physical inspections of the turbines and ancillary facilities, including transformer, are conducted on a regular basis.  Site Managers ensure that maintenance and repairs are completed in a timely manner, in accordance with the O&M contract, and wind turbine specifications.  Site Managers are also responsible for ensuring sound safety practices on site.

The number of technicians on site depends upon the size of the project. There is typically a crew of two technicians per 20-30 wind turbines.  Technicians perform preventative (planned) maintenance as well as unplanned maintenance and repair.

In addition to the on-site team, Supervisory Control and Data Acquisition (SCADA) equipment allows electronic remote monitoring of the performance and condition of the turbines and the wind farm. The SCADA system constantly monitors output, as well as the status of the individual wind turbines and the wind farm as a whole.  For example, if a turbine is not operating, the SCADA system can be used to diagnose the problem.  The SCADA system also allows communication with the utility provider and power purchaser.

Maintenance and repair
Preventive maintenance is performed on a regular basis.  Control and safety devices and gears are inspected and tested.  Any small defects are repaired, lubricants are replenished and filters are replaced.  Oil samples are taken and analyzed for signs of degradation. Unplanned maintenance and repair occurs on an as-needed basis.

Insurance policies are put into place to cover risk of liability to third parties and damage to properties.